Re: [ferret_users] An slightly annoying behaviour of the aggregate command

[Karl Smith - NOAA Affiliate <karl.smith@xxxxxxxx>]

Hi Olivier,

To switch the default dataset to an aggregation that is already defined, just use "USE" or "SET DATA" with the aggregated data name.

Thus,

    DEFINE DATA /AGG /T tagg = file_list

    ! default dataset is the aggregation just defined

    USE etopo20

    ! default dataset is etopo20

    USE tagg

    ! default dataset is again the aggregation

Karl

On Wed, Oct 2, 2019 at 1:37 AM Olivier Marti <olivier.marti@xxxxxxxxxxxx> wrote:

Hi,

If I have in a plot.jnl script a line like this :

USE my_file.nc

I can run several times "GO plot". The first time the file will be load by the USE command. The following times, the command USE is ignored, because the file is already known. It's very convenient to slowly improve a script.

But if I use : 

 DEFINE DATA/AGGREGATE/U my_data =   file1.nc, file2.nc

It works well the first time, but the second time I got :

 **ERROR: invalid command: dataset name already in use: my_data

I guess it's a feature rather than a bug. But it might be a little annoying when developing a script.

Is there a simple workaround for that ? Appart running CANCEL DATA/ALL. I may have big datasets, and loading them take some time.

Thanks,

Olivier

— 

Olivier Marti  - LSCE Bât 714 p. 1049

Tel : +33 1 69 08 77 27

mailto:olivier.marti@xxxxxxxxxxxx

--

Karl M. Smith, Ph.D.
JISAO Univ. Wash. and PMEL NOAA
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